Joseph h



April 19 1927,

J. H. DILLON PULLEY Filed Feb. 18, 1922 may;

Patented Apr. 19, 192.17.

OFFICE.

JOSEPH H. DILLON, OF WILMETTE. ILLINOIS, ASSIGNOR TO DILLON PULLEY 00., OF CHICAGO, ILLINOIS. A CORPORATION 013 ILLINOIS.

PULLEY.

Application filed February 18. 1922.

My invent-ion relates to builders hardware. and more specifically to an improved pulley and support therefor, constituting an article of manufacture commonly referred to as an entirety as a sash pulley.

One primary object of the invention is to improve the functioning of devices of this sort.

A more specific object is to provide guiding battles of a better and more ctticient shape than have heretofore been constructed.

Another primary object is to diminish the cost of the finished article without decreasing either its strength or durability.

Another object closely identified with the one just stated is to form the entire assembly of sheet metal only, there being no cast metal in the entire device, which. however, has a rigidity approximating that of a casting and more than adequate for the service for which it is intended.

Another object is to simplify the shape of the parts and simultaneously provide a more positive fastening engagement between the parts.

A more specific object is to form the cntire side, end and top walls of the casing of a single piece of material.

Further objects and advantages of the invention will become apparent as the de-' scription proceeds.

In the accompanying drawings.

Figure 1 is a plan view of a blank from which the. casing is to be formed:

Fig. 2 is a sectional view of the [inished article;

Fig. 3 is a plan view of the casing bottom; and

Fig. 4 is a detailed view illustrating a modification.

The disclosure herein is in the nature of an improvement on Patent 1,224,152 to Joseph J. Dillon, May 1, 1917.

In the embodiment of my invention selected. for illustration :1 simple flat sheetmetal face plate 10 is provided, apertured at 12 to receive fastening screws, and having a large aperture at 14. to receive the pulley casing. and a small aperture at 16 to receive fastening lugs.

A sheet metal blank 18 is bent around its center line, while the periphery thereof Serial No. 537,398.

from substantially the point 20 to the corners 22 is being curved in over the narrow area 24 indicated by dotted lines in Figure l, the outer marginal portions 26 and 28 being kept in a parallel plane with side portions 30. The folded blank, completed by wrapping portion 28 over portion 26 as clearly indicated in Figure 2 will have an open bottom, shaped to fit accurately inside the cup-shaped bottom 32, a small central area near the lower edge indicated by dotted line being pressed inward out of the plane of side portion 30 to fit the offset 36 in the bottom. Apcrturcs 38 are provided to receive pintle 40 passing through the device and riveted outside the casing at both ends. Pintle 40 does not rotate, and pulley 4:2 is provided with a sleeve or bushing 44, preferably of such material that it will slide on pintle 40 with relatively negligible friction. Pulley 42 itself is formed of duplicate sheet metal stan'ipings apertured at l-(i for the reception of annular sheet metal riveting devices 48.

The bottom 32 is apertured at 34: and 86 to guide a cord running over the pulley, the edges of the apertures being rolled back to provide flaring mouths assuring a minimum of friction on the cord. It should be noted that both these guiding apertures are so far from the points where the cord comes into contact with the pulley. that the cord, even when slack, cannot possibly ride up on the edge of the pulley groove and cut itself. Furthermore, the space 48 between the portion of the pulley carrying the cord and the enclosing casing so proportioned with respect to the diameter of the cord, that the cord cannot possibly jump far enough up toward either edge of the pulley groove to do itself any harm.

ilrom opposite sides of the casing tabs at) are struck up and bent in 'ardly as clearl r shown in Fig. 2. In threading a cord into a completely enclosed pulley, a mouse is usually required, and in the absence of :uch special equipment, it is ditlicult and often iu'lpossihle to thread the pulley. In a device constructed according to my invention. the full size cord may be thrust into aperture 34: and pushed around the pulley guided by its contact with the casing. This bends the advancing end of the cord into a curve, from which it will. not completely straighten so that the end will follow the pulley past aperture 36 coming into abutment With the center of bottom 32. Lugs 50 function as bafiles and are positioned where the advancing end of the cord will strike them and be deflected away from the pulley directly through aperture 36. It is thus possible to thread the pulley much more quickly than could be done with a mouse, by simply pushing the end of the cord in at aperture 34 and continuing to push until the other end comes out at aperture 36 Bottom 32 is preferably a very snug or pressed fit on the casing, and the assembled casing is also a very tight or pressed fit in the face plate 10. The outer portions 26 and 28 of the casing blank terminate in lugs 52, which in the assembled device he face to face and pass through apertures 16 in the base plate. The casing may be thrust into aperture 1a with its lowest corner foremost, until the downturned edge of aperture 34 books over the bottom of aperture let. It may then be rotated around the lower edge of aperture l-i-l until lugs 52 pass through aperture 16, to be bent over or clinched as clearly shown in Fig. 2, and, if desired, spot welded to plate 10. In this position there is gripping engagement at the bottom of aperture 1 L between the lip of aperture 3d and the base plate to prevent movement in one direction, and between shoulder 36 and the other side of the base plate to prevent movement in the other direction. The clinching of lugs 52, therefore, completes the operation of fasteniiiig theparts in assembled relation, no fastening members in addition to the parts themselves being required.

It will. be obvious that any suitable method of deforming lugs 52 to fasten the parts in assembled relation may be employed. In Fig. l: I have illustrated one alternative arfiangei'l'lent in which substantially half of each lug is bent over at right angles about an axis perpendicular to plate 10 to form a shoulder liOOlilHg over the plate.

Without further elaboration. the foregoing; will so fully explain the gist of my invention, that others may, by applying. cur rent knowledge. readily adapt the same for use under i service,

eeaeao thrust partly through said aperture, a pulley in said casing, said casing projecting; through said aperture to house the portion of the pulley projecting pastlhe plane of said face plat and apertures in the bottom of said casing; in tangential alignment with the periphery of said pulley.

3. in a device of the class described, a face plate liia'vingg; an aperture, and a sheet metal casing thrust partly through said aperture. said face plate bein g a driving lit on said casing.

+l. In a device of the class described, a face plate ha ving an aperture, a casing thrust partly through said aperture, said casing having; shoulders on its sides adjacent one end of said aperture, and a projection on its bottom spaced from the plane of said shoulders by substantially the thickness of the face plate and engaging the opposite side thereof.

In a device of the class described, a bottom having an upturned peripheral lip, said lip and bottom being oifset inwardly adjacent one end, and an open bottomed casing with its edge entered inside said lip.

(3. In a device of the class described, a bottom having an upturned peripheral lip, said lip and bottom being oiij'set inwardly adjacent one end, an open bottomed casing with its edge entered inside said lip, and an apertured face plate fitting over one side of said casing, and the inwardly olii'set portion of said bottom.

7. In a device of the class described, a bottom having an upturned peripheral lip. said lip and bottom being otlset inwardly adjacent one end, an open bottomed casing with its edgre entered inside said lip. an apertured face plate fitting over one side of said asin and the inwardly otl'set portion of said bottom. said o'tt'set engaging one side of said face plate to limit relative .n'uivcment between the parts in one direction, and a downward projection on said bottom cn canine the other side of said face plate to limit move ment in the other direction.

In :1 device of the class described, a. bottom having an upturned peripheral lip said lip and bottom beiup; otiset inwardly adjar-cut one end, an open bottomed casing: wit h its edge entered inside said lip, an aperturcd face plate lit-tineover one side of said casing and the inwardly otlsct portion of said bottom. said offset engaging one side of said face plate to limit relative movement between the parts in one direction, and a downward projection on said bottom engaging the other side of said face plate to limit movement in the other direction, 5 'id downwari'l projection coi'istituting a lip defining a guide aperture in said bottom.

9. In a device of the class described, a face plate having an aperture, a casing thrust partly through said aperture, and a pulley in said casing extending on both sides of the plane of said face plate, said casing having a closed front side covering the portion of said pulley n'ojecting through said face plate.

10. In adevice of the class described, a face plate having an aperture, a casing thrust partly through said aperture, a pulley in said casing extending on both sides ot' the plane of said face plate, and apertures in said casing for guiding a cord passing over said pulley in lines substantially parallel to said face plate.

11. In a device of the class described, a face plate having an aperture, a casing thrust partly through said aperture. a pulley in said casing extending on both sides oi the plane of said face plate, and apertures in said casing for guiding a cord passing over said pulley, said apertures being remote from where the cord leaves the pulley.

12. In a device of the class described, a sheet metal casing, a pulley therein. and lugs inside the casing bent in from the sides thereof to guide a cord passing partly round the pulley.

13. In a device ot the class described, a sheet metal casing, a pulley therein. apertures in said casing for the entry and exit of a cord passing partly round the pulley,

and guides inside the casing adjacent the exit aperture for directing a free end oi cord out through said aperture.

14. In a device of the class described. a sheet metal casing, a pulley therein, apertures in said casing for the entry and exit of a cord passing partly round the pulley, and guides adjacent the exit aperture :tor directing a free end of cord out through said apertmre, said guides consisting ot lugs bent in From the side walls or said casing.

15. In a device of the class described, a pocket having a substantially plane mouth and a substantially semi-circular impel-torate bottom, a pulley in said pocket, a pintle for said pulley substantially concentric with said bottom. and a cover closing said. pocket.

16. In a device oil. the class describtal. a one-piece pocket having a substantially plane mouth and a substantially semi-circular bottom, a pulley in said pocket, :1 pintle for said pulley substantially concentric with said bottom. and. a cover closing said poclcet, said cover having aperturesv at its ends remote from the periphery of said pulley .i'or guiding a cord into and out ot said pocket.

17. A pulley casing forn'ied of a single sheet of material, said casing being in the form ot an open mouthed pocket, having one edge integral, and the remaining edges sealed by beading the periphery ot one side wall around the edge of the other, and a cover gripping the edges of the pocket to brace its walls.

18. A pulley casing formed of a single sheet of material. said casing being in the form of an open mouthed pocket, having one edge integral. and the remaining edges sealed by beading the periphery of one side wall around the edge of the other, the peripheral portions used to seal the pocket extending out to form attaching lugs.

19. In a device of the class described, in combination, a face plate having an aperture, a casing thrust partly through said aperture. and a pulley in said casing extending on both sides of the plane of said face plate. said casing housing said pulley on both sides of the plane of said face plate.

20. In a device of the class described, in combination, an apertured face plate, a casing thrust partly through said plate, a downward projection on the bottom of said casing engaging the trout of said plate side shoulders near the bottom of said casing engaging the rear of said plate, and fastenlag means near the upper end 0t said aperture for holding the parts in assembled position.

271.. In a device of the class described, in combination, an apertured face plate, a casing thrust partly through said plate, side shoulders near the bottom of said casing eugaging the rear of said plate, and fastening means near the upper end ot. said aperture for holding the parts in assembled posi tion.

22. In a deviceof the class described, in combination. an apertured face plate. a cas-- ing having a closed front side thrust partly through said plate, projections near the bottom ot said casing engaging the rear oli said plate, and fastening means near the upper end of said aperture tor holding the parts in assembled position.

23. In a. device of the class described. a sheet metal casing, a pulley therein. and lugs inside the casing bent in from the sides thereot to guide a cord passing partly around the pulley, said lugs lying out of contact with the cord after it passes outside the casing and is drawn taut.

it. In a device of the class described, a casing, a pulley Within said casing, apertures in said casing "for receiving a cord, said apertures encircling said cord only at points he youd where the cord leaves the pulley, and a battle struck in from said casing adjacent the edge of one of said apertures to prevent the end of a cord -from following the pulley groove past said aperture.

in witness whereof. I hereunto subscribe my name this 15 day of Ifiebruarv. 1922.

J OS. H. DILLON.

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